基于缓解沙漠高速公路风沙危害的路基参数优化——以榆靖高速公路为例

Optimization of Roadbed Parameters Based on Alleviation of Sand Damage to Desert Expressway

在沙漠地区修筑高速公路时,风沙对公路路基的危害是公路安全和运营的最大影响因子之一。为了寻求最适合沙漠地区高速公路风沙危害最经济的理论路基断面形式,通过对榆(林)靖(边)沙漠高速公路各种路基实测数据应用数学模型进行定量分析,查明了影响路基沙害程度的主要参数,提出了减少路基沙害程度的设计理念,并对不同路基形式的沙害程度进行了比较,给出了路基沙害程度较小的路基断面形式及参数值。研究成果对今后在沙漠地区修筑高速公路设计及施工具有一定的指导意义。

Sand damage to roadbed is one of the biggest factors affecting road safety and operation of desert expressway.In order to find out the most economical theoretical cross section of roadbed that is optimal to sand damage to expressway in desert areas,this paper quantitatively analyzed the measured data of various roadbeds along Yulin-Jingbian Expressway by using of mathematic model,has got the chief parameters affecting the degree of sand damage to roadbed,Put forward the design principle for alleviating sand damage to roadbed,compared the degree of sand damage to various roadbed structures,has obtained the relative ideal roadbed section pattern with less sand damage.It is of significance in designing and building expressway in desert areas.